<template>
  <div class="index">
    <div class="diQiu"></div>
    <div class="jianTou"></div>
    <div class="wangGeQiu"></div>
    <div class="map"></div>
  </div>
</template>

<script>
import * as echarts from "echarts";
import "@/js/china"; // 引入中国地图
export default {
  mounted() {
    this.initEcharts();
  },
  methods: {
    initEcharts() {
      // 绘制图表
      // 各省市坐标
      let chinaGeoCoordMap = {
        黑龙江: [127.9688, 45.368],
        内蒙古: [110.3467, 41.4899],
        吉林: [125.8154, 44.2584],
        北京市: [116.4551, 40.2539],
        辽宁: [123.1238, 42.1216],
        河北: [114.4995, 38.1006],
        天津: [117.4219, 39.4189],
        山西: [112.3352, 37.9413],
        陕西: [109.1162, 34.2004],
        甘肃: [103.5901, 36.3043],
        宁夏: [106.3586, 38.1775],
        青海: [101.4038, 36.8207],
        新疆: [87.9236, 43.5883],
        西藏: [91.11, 29.97],
        四川: [103.9526, 30.7617],
        重庆: [108.384366, 30.439702],
        山东: [117.1582, 36.8701],
        河南: [113.4668, 34.6234],
        江苏: [118.8062, 31.9208],
        安徽: [117.29, 32.0581],
        湖北: [114.3896, 30.6628],
        浙江: [119.5313, 29.8773],
        福建: [119.4543, 25.9222],
        江西: [116.0046, 28.6633],
        湖南: [113.0823, 28.2568],
        贵州: [106.6992, 26.7682],
        云南: [102.9199, 25.4663],
        广东: [113.12244, 23.009505],
        广西: [108.479, 23.1152],
        海南: [110.3893, 19.8516],
        上海: [121.4648, 31.2891]
      };
      // 飞线点数据
      let chinaDatas = [
        [
          {
            name: "黑龙江",
            value: 0
          }
        ],
        [
          {
            name: "内蒙古",
            value: 0
          }
        ],
        [
          {
            name: "吉林",
            value: 0
          }
        ],
        [
          {
            name: "辽宁",
            value: 0
          }
        ],
        [
          {
            name: "河北",
            value: 0
          }
        ],
        [
          {
            name: "天津",
            value: 0
          }
        ],
        [
          {
            name: "山西",
            value: 0
          }
        ],
        [
          {
            name: "陕西",
            value: 0
          }
        ],
        [
          {
            name: "甘肃",
            value: 0
          }
        ],
        [
          {
            name: "宁夏",
            value: 0
          }
        ],
        [
          {
            name: "青海",
            value: 0
          }
        ],
        [
          {
            name: "新疆",
            value: 0
          }
        ],
        [
          {
            name: "西藏",
            value: 0
          }
        ],
        [
          {
            name: "四川",
            value: 0
          }
        ],
        [
          {
            name: "山东",
            value: 0
          }
        ],
        [
          {
            name: "河南",
            value: 0
          }
        ],
        [
          {
            name: "江苏",
            value: 0
          }
        ],
        [
          {
            name: "安徽",
            value: 0
          }
        ],
        [
          {
            name: "湖北",
            value: 0
          }
        ],
        [
          {
            name: "浙江",
            value: 0
          }
        ],
        [
          {
            name: "福建",
            value: 0
          }
        ],
        [
          {
            name: "江西",
            value: 0
          }
        ],
        [
          {
            name: "湖南",
            value: 0
          }
        ],
        [
          {
            name: "贵州",
            value: 0
          }
        ],
        [
          {
            name: "广西",
            value: 0
          }
        ],
        [
          {
            name: "海南",
            value: 0
          }
        ],
        [
          {
            name: "上海",
            value: 1
          }
        ]
      ];
      let formdata = "宁夏"; // 中心点
      let convertData = function(data) {
        let res = [];
        for (let i = 0; i < data.length; i++) {
          // console.log(data[i])
          let dataItem = data[i];
          let fromCoord = chinaGeoCoordMap[dataItem[0].name];
          let toCoord = [106.3586, 38.1775]; //中心点地理坐标
          if (fromCoord && toCoord) {
            res.push([
              {
                // 飞线从哪里出发
                coord: toCoord
              },
              {
                // 飞线去往哪里
                coord: fromCoord,
                value: dataItem[0].value
              }
            ]);
          }
        }
        return res;
      };
      let series = [];
      [[formdata, chinaDatas]].forEach(function(item, i) {
        // console.log(item)
        series.push(
          {
            type: "lines",
            coordinateSystem: "geo",
            zlevel: 2,
            effect: {
              show: true,
              period: 4, //箭头指向速度，值越小速度越快
              trailLength: 0, //特效尾迹长度[0,1]值越大，尾迹越长重
              symbol: "arrow", //箭头图标
              symbolSize: 5, //图标大小
              color: "#fcdd6e" // 图标颜色
            },
            lineStyle: {
              normal: {
                show: true,
                width: 1, //尾迹线条宽度
                opacity: 1, //尾迹线条透明度
                curveness: 0.3, //尾迹线条曲直度
                color: "#fcdd6e" // 飞线颜色
              },
              color: "#fcdd6e"
            },
            data: convertData(item[1])
          },
          {
            type: "effectScatter",
            coordinateSystem: "geo",
            zlevel: 2,
            rippleEffect: {
              //涟漪特效
              period: 4, //动画时间，值越小速度越快
              brushType: "stroke", //波纹绘制方式 stroke, fill
              scale: 3, //波纹圆环最大限制，值越大波纹越大
              color: "#fcdd6e"
            },
            label: {
              normal: {
                show: false,
                position: "right", //显示位置
                offset: [5, 0], //偏移设置
                formatter: function(params) {
                  //圆环显示文字
                  return params.data.name;
                },
                fontSize: 13
              },
              emphasis: {
                show: false
              }
            },
            symbol: "circle",
            symbolSize: function(val) {
              return 5; //圆环大小
            },
            itemStyle: {
              normal: {
                show: false,
                color: "#fce182"
              }
            },
            data: item[1].map(function(dataItem) {
              return {
                //在这里定义你所要展示的数据
                // name: dataItem[0].name,
                // value: chinaGeoCoordMap[dataItem[0].name].concat([dataItem[0].value]),
                name: dataItem[0].name,
                value: chinaGeoCoordMap[dataItem[0].name].concat([
                  dataItem[0].value
                ])
              };
            })
          },
          //中心点
          {
            type: "effectScatter",
            coordinateSystem: "geo",
            zlevel: 15,
            rippleEffect: {
              period: 4,
              brushType: "stroke",
              scale: 4,
              color: "#38ff85"
            },
            label: {
              normal: {
                show: false,
                position: "right",
                //offset:[5, 0],
                color: "#38ff85",
                formatter: "{b}",
                textStyle: {
                  color: "#38ff85"
                }
              },
              emphasis: {
                show: false,
                color: "#38ff85"
              }
            },
            symbol: "circle",
            symbolSize: 5,
            itemStyle: {
              color: "#38ff85"
            },
            data: [
              {
                name: item[0],
                value: chinaGeoCoordMap[item[0]].concat([10])
              }
            ]
          }
        );
      });
      this.initMap(series);
    },

    initMap(series) {
      let myChart = echarts.init(document.querySelector(".map"));
      let option = {
        // bgColor: '#1a1e45',
        tooltip: {
          trigger: "item"
        },
        legend: {
          orient: "horizontal", //图例的排列方向
          // textStyle: { color: '#1a1e45' },
          x: "left", //图例的位置
          y: "-20000000000000"
        },
        visualMap: {
          //颜色的设置  dataRange
          // textStyle: { color: '#1a1e45' },
          x: "left",
          y: "bottom",
          // splitList: [{ start: 0, end: 150000 }],
          show: false
          // text:['高','低'],// 文本，默认为数值文本
          // color: ['#1a1e45'],
        },
        geo: {
          map: "china",
          zoom: 1.2,
          label: {
            normal: {
              show: false,
              textStyle: {
                color: "#FFFFFF"
              }
            },
            emphasis: {
              show: true,
              fontSize: 14
            }
          },
          roam: false, //是否允许缩放
          itemStyle: {
            normal: {
              color: "rgba(26, 30, 69, 0.5)", //地图背景色
              borderColor: "rgba(34, 204, 251, 0.5)", //省市边界线00fcff 516a89
              borderWidth: 1,
              textStyle: "#fff"
            },
            emphasis: {
              color: "rgba(34, 204, 251, 0.5)" //悬浮背景
            }
          },
          data: []
        },
        series: series
      };

      myChart.setOption(option);
      window.addEventListener("resize", function() {
        myChart.resize();
      });
    }

    // // 图表跟随浏览器自适应
    // window.addEventListener("resize", function() {
    //       myChart.resize();
    //     });
  }
};
</script>

<style lang="scss" scoped>
.index {
  position: relative;
  overflow: hidden;
  width: 100%;
  height: 100%;

  .diQiu {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    background: url("@/assets/diQiu.png");
    background-position: center center;
    background-repeat: no-repeat;
    opacity: 0.3;
  }
  .jianTou {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    background: url("@/assets/jianTou.png");
    background-position: center center;
    background-repeat: no-repeat;
    opacity: 0.3;
    animation: jianTouRotate 10s linear infinite;
  }
  .wangGeQiu {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    background: url("@/assets/wangGeQiu.png");
    background-position: center center;
    background-repeat: no-repeat;
    opacity: 0.3;
    animation: wangGeRotate 10s linear infinite;
  }
  // 地图
  .map {
    width: 100%;
    height: 100%;
  }
  // 定义动画：
  // 箭头动画效果
  @keyframes jianTouRotate {
    from {
      transform: translate(0, 0) rotate(0deg);
    }
    to {
      transform: translate(0, 0) rotate(-360deg);
    }
  }
  // 网格球动画
  @keyframes wangGeRotate {
    from {
      transform: translate(0, 0) rotate(0deg);
    }
    to {
      transform: translate(0, 0) rotate(360deg);
    }
  }
}
</style>